21030201230 has 32 divisors (see below), whose sum is σ = 38704417920. Its totient is φ = 8223592960.

The previous prime is 21030201163. The next prime is 21030201239. The reversal of 21030201230 is 3210203012.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030201239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388676 + ... + 439464.

It is an arithmetic number, because the mean of its divisors is an integer number (1209513060).

Almost surely, 2^21030201230 is an apocalyptic number.

21030201230 is a deficient number, since it is larger than the sum of its proper divisors (17674216690).

21030201230 is a wasteful number, since it uses less digits than its factorization.

21030201230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51724.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21030201230 its reverse (3210203012), we get a palindrome (24240404242).

The spelling of 21030201230 in words is "twenty-one billion, thirty million, two hundred one thousand, two hundred thirty".